Operating headlights of locomotives.



PATENTED FEB. 27, 1906.

. W. H. DONALDSON, OPERATING HEADLIGHTS OF L OUOMOTIVES.

APPLICATION FILED JUNE 20, 1905.

Al N UNITED STATES PATENT OFFICE.

WILLIAM H. DONALDSON, OF JOLIET, ILLINOIS.

OPERATING HEADLIGHTS OF LOCOMOTIVES.

Specification of Letters Patent.

Patented Feb. 27, 1906.

Application filed June 20,1905. Serial No. 266,132.

To all whom it may concern:

Be it known that I, WILLIAM H. DONALD- SON, a citizen of the UnitedStates, residing at J oliet, in the county of Will and State ofIllinois, have invented a new and useful Operating Headlights ofLocomotives, of which the following is a specification.

This invention relates to devices for controlling the position of theheadlights of locomotives and for similar purposes, and has for itsobject to provide a simply-constructed and easily-applied deviceoperative from the cab and under the control of the engineer whereby theheadlight may be turned to throw the rays of light from side to side toany desired extent.

With these and other objects in view, which will appear as the nature ofthe invention is better understood, the same consists in certain novelfeatures of construction, as hereinafter fully described and claimed.

In the accompanying drawings, forming a part of this specification, andin which corresponding parts are denoted by like designating characters,is illustrated the preferred form of embodiment of the invention capableof carrying the same into practical operation, it being understood thatthe invention is not necessarily limited thereto, as various changes inthe shape, proportions, and general assemblage of the parts may beresorted to without departing from the principle of the invention orsacrificing any of its advantages.

In the drawings, Figure 1 is a plan view of a locomotive with the cab inhorizontal section and with theimproved devices applied. Fig. 2 is atransverse section, enlarged, of the upper portion of the cab of thelocomotive on the line 2 2 of Fig. 1'. Fig. 3 is a sectional sideelevation, enlarged, of the headlight and the swivel-base on which it ismounted, the base being in section. Fig. 4 is an inverted perspectiveview, enlarged, of the upper member of the swivel mechanism.

The locomotive is represented as awhole at 11 and provided with abracket10 at the forward end formed with a flat upper surface farnd with acentral socket 13 depending there- Mounted for rotation upon the bracketmember 10 is a swivel-plate 14, having a stud 15 operating in the socket13 and supporting the headlight 16 of the usual construction. The lowerend of the stud 15 is provided with means, such as a nut 17, forsecuring the swivel-plate in position while leaving it free to berotated. Formed in the swivel member 14 is a cable groove 18, havingmeans, such as an eye or pin 19, for the attachment of a section ofcable 20, and leading thence from opposite sides to rods 21 22, thelatter extending into the cab ofthe locomotive, (indicated at 23.)Pivoted at its center, as at 25, to a bracket 26, depending from theceiling of the cab 23, is a lever-arm 27, the rods 21 22 beingconnected, as at 28 29, to the ends of this leverarm, which for thepurpose of this description will be referred to as the primarylever-arm. Attached rigidly to the primarylever-arm 27 is a gear-segment30, and connected rigidly to a shorter leverarm 31 is a correspondingbut reversely-disposed gear-segment 32. For the purpose of thisdescription the shorter lever-arm is designated as the supplementallever arm, and the same is pivoted at 33 to the ceiling of the cab 23,as by a bracket 39, and provided at its terminal with a handle 34 and aspring controlled pawl 35 for engagement with a toothed segment 36,connected, as by brackets 37, to the ceiling of the cab 23. The systemof levers is thus disposed above the engineers head entirely out of theway of any other of the various levers, valves, and apparatus within thecab, while at the same time in convenient position for operation fromthe engineers seat, which is indicated at 38. It will be obvious that bythis simple arrangement the movement of the handle end 34 of thesupplemental leverarm 31 will correspondingly move the primary lever-arm27 through the coaction of the gear-segments 30 32, the shorter orsupplemental leverarm thus exerting a strong leverage force upon theprimary lever-arm. By thismeans the headlight may be turned to throw therays of light to any desired angle, which will be very convenient inrunning upon curves, as the light may thus be caused to follow the trackas the .train proceeds.

The rods 21 27 are provided with turnbuckles, as at 39 40, to providemeans for adjusting the rods. The swinging headlight will also be founduseful for other purposes for instance, for illuminating the territoryat the sides of the track or for signaling by a system of flash-lightsor otherwise.

The inventionv is simple in construction and can be readily applied toany of the various makes of locomotives and headlights.

Having thus described the invention, what is claimed isspaced teethdisposed concentric to the pivot of said secondary lever, and a pawlmovably connected to said secondary lever and engag- I 5 ing said spacedteeth.

In testimony that I claim the foregoing as my own I have hereto affiXedmy signature in the presence of two witnesses.

WILLIAM H. DONALDSON.

Witnesses:

F. O. WILGOX, T. A. MASON.

